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Home >> Triangle >> Altitude of a Triangle >>

## Altitude of a Triangle

 Properties Types / Classification Perimeter of Equilateral Triangle Median of Triangle Interior of a Triangle Exterior of a Triangle Altitude of a Triangle Interior Angles of Triangle Exterior Angles of Triangle Interior Opposite Angles of Triangle Adjacent Interior Angle of Triangle Congruent Triangles Area of Triangle Area of Triangle by Heron's Formula Construction of Triangle (compass)

An Altitude is a line segment:
• Whose one end is at vertex of a triangle
• Whose other end is on the opposite side of aforementioned vertex
• Which is perpendicular to this opposite side

Example: In the following Triangle ABC:

Whose one end is at vertex 'A' of a triangle
Whose other end 'D' is on the opposite side 'BC' of vertex 'A'
Which is perpendicular to the opposite side 'BC'

Hence, AD is an altitude of Triangle ABC.

### Study More Solved Questions / Examples

 How many altitudes can a triangle have ? Can you think of a triangle whose two sides are also its altitudes ? Explain with diagram.
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